Malicious PDF — malware analysis report

Static analysis result for SHA-256 e134afd2ac6d04f3…

MALICIOUS

PDF

336.2 KB
MD5: 29db2fba7975a16dbc4f3c9606432ab2 SHA-1: 5d65e6984e521936707b32219b39388efb4296fa SHA-256: e134afd2ac6d04f37da7ccdf54ba298cc439a02c56636a855a8d51ee025fb697
176 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.001 PowerShell

The file is a PDF document identified as malicious by ClamAV and a machine learning classifier. It contains embedded JavaScript and triggers the CVE-2010-2883 exploit for Adobe Reader. The embedded JavaScript stream is likely used to download and execute a second-stage payload. The presence of XFA form elements and specific Adobe namespaces suggests a sophisticated PDF structure potentially used for exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5560

Heuristics 6

  • Adobe Reader CoolType SING font exploit — CVE-2010-2883 critical CVE likely CVE_2010_2883
    PDF embeds a TrueType/OpenType font with an actual SING table and pairs it with JavaScript heap-spray shellcode. This matches the public Adobe Reader CoolType SING exploit shape for CVE-2010-2883.
  • ClamAV: Pdf.Exploit.Agent-30042 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-30042
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xci/2.6/
    • http://www.xfa.org/schema/xfa-template/2.6/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0012_000.js
1fff69c9c116caf307992537fd252454e51d825b7f4282a8d926bad6b5dcb71f		 pdf-javascript-stream PDF /JS object 12 at offset 0x53456 8298 bytes

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